Carrie Underwood warns Hollywood is a 'self-serving business,' credits faith for keeping her from losing her roots The ‘American Idol’ judge leans on her faith when navigating stardom NEW You can now listen to Fox News articles! For over 20 years, Carrie Underwood has faced Hollywood's many challenges. Despite the ebbs and flows throughout her career, the country music star has remained steadfast in one thing: her faith.  After Monday's faith-themed episode of " American Idol ," Underwood — who